Does Cornstarch Go Bad
Does corn starch run out?
Open up If it's still sealed and out of the box, fine.
Just because a food has an expiration date doesn't mean it should be thrown away. Federal law requires a pre-use or pre-use date for all food products. With dry food, canned food and frozen food, that doesn't mean anything. I've never heard of a corn mill going bad unless it's in short supply. Flour and corn are the same!
In fact, it is well preserved if it is covered and left dry.
When in doubt, throw it away, buy only 1 doll or more.